10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Running Oracle Linux 6 (derivative of RHEL 6)
Given this snippet of code in a shell script:
#-- reset oratab to use 11.2 home for dwdev
#-- normally we'd just use sed to do this sort of thing, but that would
#-- require permissions that we don't have in the /etc/ directory, so we
#-- ... (3 Replies)
Discussion started by: edstevens
3 Replies
2. Shell Programming and Scripting
Hi, I would like to change my CSV file by adding " and : and moving some of the information around. the CSV file looks as follows:
501254424;500440257;PE PACKS;300467279;PREP;;276476070;655031001867176;Two Block;Olga;25/12/2015 00:00:00;Olga
I would like to move the field 7 to the front "... (13 Replies)
Discussion started by: omuhans123
13 Replies
3. Shell Programming and Scripting
hello,
I have problem with writing/adjusting a shell script.
I searched forum and unfortunately couldn't write scipt based on the information I found.
I never wtire such so it's hard for me and I do need to modify one script immediately.
case looks like:
1. 'file' that needs to be modified... (3 Replies)
Discussion started by: bipbip
3 Replies
4. Shell Programming and Scripting
I have the following:
remsh $host -n 2>>syslog_issue_list.txt grep -i -e "EMS" -e "error" -e "warning" -e "excessive" /var/adm/syslog/syslog.log |
awk /"$DATE1"/ | awk -vhost="$host" '!/remsh|telnetd/{print host "\n", $0 >> "syslog_issue_list.txt"}'
I am creating a health script that has... (4 Replies)
Discussion started by: chipblah84
4 Replies
5. Shell Programming and Scripting
Hi,
I have a file that looks like this:
27+:<10,289808,1>
31+:<11,1445372,1>
33-:<7,1014101,2>
35+:<11,728811,1>
36-:<11,1445205,0>
37+:<11,1445792,2>
and I want to change it to this:
+ 10 289808
+ 11 1445372
- 7 1014101
+ 11 728811
- 11 1445205
+ 11 1445792 (3 Replies)
Discussion started by: kylle345
3 Replies
6. Shell Programming and Scripting
Hi All,
I have a file like below, how can i insert one line after line 1 without using a temporary file in perl?
line 1
line 2
line 3
expected result
line 1
new line <---insert here
line 2
line 3 (2 Replies)
Discussion started by: summer_cherry
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7. UNIX for Dummies Questions & Answers
Hi,
I would like to remove any lines from a text file that begin with #, or that are blank. How can I do that with BASH?
Mike (3 Replies)
Discussion started by: msb65
3 Replies
8. Shell Programming and Scripting
Hi all
Can anyone suggest me a good solution ? My requirement is as follows
I have a plain text file similar to this...
sending data to 0003345234
here is the output...
,..........
...........
.......
sending data to 00033452ab
here is the output...
,..........
...........
.... (5 Replies)
Discussion started by: ./hari.sh
5 Replies
9. Shell Programming and Scripting
Hello,
I got this question which tells me to customize my login script. Some people in the forums suggested to modify the .profile file in my home directory. I did so, but none of my customizations show up when I open the terminal after.
So, I tried to modify other files in my home directory,... (1 Reply)
Discussion started by: Hyunkel
1 Replies
10. Shell Programming and Scripting
I'm a new member of the forum, I had this new generate file since I use 'grep' and 'awk', what I want to do is get rid off the all 0s before the numbers, is there any one who could help me to figure it out? Thanks a lot!
yun
0000000029 000q7472 2002/03/01
0000000030 000q7472 2002/03/01
... (2 Replies)
Discussion started by: yxiao
2 Replies
bup-margin(1) General Commands Manual bup-margin(1)
NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS
--predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO
bup-midx(1), bup-save(1)
BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown- bup-margin(1)